Substantially balanced bidirectionally pivoted valve operating apparatus
US5810051A · kind A · utility
31Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Nov 5, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/6855
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
The valve operating apparatus cycles valves between open and closed positions. The valve operating apparatus includes a trailer for use in towing behind other vehicles, for instance, behind a pickup truck. The trailer includes an engine, pump, battery, reservoir and a bidirectionally oriented motor which is suspended from a telescoping extension bar. The operation of the valve operating apparatus is substantially balanced and requires very little effort by the operator to operate. Specifically, the operator does not have to push down or lift the apparatus as it is substantially balanced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.